feat: postage stamps support (#115)

* chore: release 0.3.0

* feat: added postage stamp table to list all stamps

* feat: postage stamp modal to purchase stamps

* feat: postage stamps provider

* chore: added formik

* chore: proper form state handling

* chore: revert accidental release inclusion

* chore: polishing identified when developing the upload functionality

Co-authored-by: bee-worker <70210089+bee-worker@users.noreply.github.com>

package.json

@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@ethersphere/bee-js": "^0.9.0",
-    "@material-ui/core": "^4.11.3",
+    "@material-ui/core": "^4.11.4",
     "@material-ui/icons": "^4.11.2",
     "@material-ui/lab": "^4.0.0-alpha.57",
     "@types/react-router": "^5.1.13",
@@ -33,6 +33,8 @@
     "axios": "^0.21.1",
     "bignumber.js": "^9.0.1",
     "feather-icons": "^4.28.0",
+    "formik": "^2.2.8",
+    "formik-material-ui": "^3.0.1",
     "material-ui-dropzone": "^3.5.0",
     "opener": "^1.5.2",
     "qrcode.react": "^1.0.1",